CN103388147B - Central air-conditioner refrigerant water maintenance procedure - Google Patents
Central air-conditioner refrigerant water maintenance procedure Download PDFInfo
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- CN103388147B CN103388147B CN201310313677.6A CN201310313677A CN103388147B CN 103388147 B CN103388147 B CN 103388147B CN 201310313677 A CN201310313677 A CN 201310313677A CN 103388147 B CN103388147 B CN 103388147B
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Abstract
It is the formula do not had both at home and abroad that TJCACW Central air-conditioner refrigerant water (containing heating water) maintains reagent combination, when using this formula to maintain Central air-conditioner refrigerant water: chilled water is to corrosion of carbon steel rate≤0.023g/m
2h, red copper corrosion rate≤0.001g/m
2h, aluminium corrosion rate < 0.001g/m
2h, plays the internal dirt thermal resistance < 0.86 × 10 of the air conditioner refrigerating main frame vaporizer of heat exchange effect, heating heat exchanger and air conditioning terminal surface cooler for 1 year in defects liability period
-4㎡ K/W, simultaneously can heavy metal ion in chelating chilled-water system, minimizing heavy metal ion (as iron, copper etc.) causes unfavorable (blocking as arm, interchanger and end surface cooler) to coolant system, the aging of rubber soft-jointing in chilled-water system can be prevented, the microorganism in chilled water can be killed, form smooth pre-film at steel surface.
Description
Technical field
The chilled water (containing heating water) that the present invention relates to central air-conditioning use procedure sewerage disposing maintains reagent combination, be pioneering nuisanceless, environmental protection, efficient, economical reagent combination, belong to integrated maintenance Central air-conditioner refrigerant water (containing heating water) being carried out to corrosion-mitigation scale-inhibition, sterilization algae removal.Hereinafter Central air-conditioner refrigerant water comprises heating water, is referred to as chilled water.
Background technology
One, new Central air-conditioner refrigerant water system is before enabling, the metallic conduit of chilled water circulation and refrigeration host computer vaporizer, heating heat exchanger, end equipment surface cooler inwall all also exist slight rust deposite, this mainly due in the installation process of some cycles supplier and construction party to carry out pipe section pressure test to chilled water line and heat-exchange equipment, all the time the examination hydraulic water of trace is there is in coolant system after release, be in the situation of semi-wet, cause the corrosion of chilled-water system metallic conduit and heat-exchange equipment inwall before using.
Two, before owner in use entreats air-conditioning (no matter be new clothes or used), often matting and passivation are carried out to central air-conditioning closed-circuit system, and in Central air-conditioner refrigerant water system after matting and passivation, the rust deposite (comprising metal ion etc.) that chilled-water system cannot be come off because of Cleaning and Passivation all discharges system.
The pipeline of three, Central air-conditioner refrigerant water system is equipped with some rubber soft-jointings, the impact of usually being expanded with heat and contract with cold, and rubber soft-jointing breaks due to aging often can causing.
Four, in Central air-conditioner refrigerant water use procedure, because the factors such as anerobe often cause the corrosion of metal pipe-wall in coolant system, through test, the corrosion rate of general chilled water medium carbon steel has exceeded 0.089g/m
2h, the corrosion rate of red copper has exceeded 0.013g/m
2h; According to GB50050-2007 regulation, the corrosion rate of carbon steel should be less than 0.066g/m
2h, the corrosion rate of copper should be less than 0.0045g/m
2h.
Five, in central air-conditioning heating use procedure, in order to change out of order valve, pipe fitting, end equipment etc. or system overhaul, sometimes system water is needed all to discharge, repeatedly the new make up water of tens of ton and even hundreds of tons is heated to about 50 ~ 60 DEG C from about 5 DEG C through thermal source interchanger, the fouling of interchanger inside can be caused, thus affect the heat exchanger effectiveness of interchanger.
When six, using sodium pentahydyoxycaproate as corrosion inhibiting and descaling agent in maintaining agent formula in chilled water in the past, easily cause the increase of microorganism in chilled water, give and control microbiological corrosion and add certain difficulty, be increase sterilant in the past; But general sterilant is chloride, and the increase of chlorine causes again corrosion of metal, in order to the increase reduced because of chlorine causes corrosion of metal, that must strengthen the inhibiter of other couplings adds concentration.
Seven, when being equipped with aluminum appliance and pipeline in chilled-water system, some Central air-conditioner refrigerant water medicament maintenance formula in the past has certain corrosion to aluminium.
Summary of the invention
For problems of the prior art, in order to ensure the low consumption of central air-conditioning coolant system, efficiently, run healthily, carry out Central air-conditioner refrigerant water maintenance problem with nuisanceless, environmental protection, efficient, economical reagent combination, become the new research direction of Central air-conditioner refrigerant water maintenance.
The technical scheme that the present invention is adopted to achieve these goals is: TJCACW Central air-conditioner refrigerant water (containing heating water) maintains reagent combination:
200 ~ 1100ppm sodium pentahydyoxycaproate+300 ~ 900ppm borax+10 ~ 30ppm benzotriazole.
Beneficial effect of the present invention: with this reagent combination over one year, select to relate to medicament different concns in formula for the behaviour in service that more than 30 Central air-conditioner refrigerant water are different and carry out daily maintenance, measure in servicing operations and use the corrosion rate of above-mentioned reagent combination carbon steel at 0.0081 ~ 0.023g/m
2h; This formula is corrosion-free to galvanized pipe, corrosion-free to copper tube, with lacing film or portable corrosion rate tester (U.S. produces 9000PLUS) test, all can not measure corrosion; Open air conditioning terminal surface cooler, air conditioner refrigerating main frame vaporizer, heating heat exchanger, check inwall, find no dirt and exist; In refrigeration and heating process, for the blocking of central air conditioner end equipment, compared with when being used in Central air-conditioner refrigerant water system with other prescription medicaments, blocking amount is few; Use this reagent combination to carry out corrosion inhibition test to aluminium, corrosion rate is less than 0.001g/m
2h.In formula, sodium pentahydyoxycaproate plays corrosion-mitigation scale-inhibition effect, plays heavy metal ion in chelating chilled-water system (can prevent metal ion from producing anticaustic, solve the end equipment blocking caused therefrom) simultaneously; Borax plays the corrosion inhibition to carbon steel and aluminium, plays a part to prevent rubber soft-jointing in chilled-water system aging simultaneously, can also kill the microorganism in chilled water in addition.Benzotriazole mainly prevents the corrosion of copper material in chilled-water system.
Embodiment
First the chemical substance used in formula is illustrated:
For the Central air-conditioner refrigerant water system that rust deposite is more serious, need could use this prescription medicament after Cleaning and Passivation, the Central air-conditioner refrigerant water system for relative clean directly can use this prescription medicament.Use the embodiment of this prescription medicament as follows:
One, accurately calculate the water-holding quantity of Central air-conditioner refrigerant water system, first the foreign material such as the rust deposite of expansion tank inwall are manually removed clean, cleaning dirt must not be dropped in main pipeline during operation.By the emptying of central air-conditioning coolant system water, then take the strainer on the strainer of fan coil bad for central air conditioner end equipment refrigeration, air conditioning unit water inlet pipe and water-main apart wash clean, and by system topped up with water; Whether normally reexamine water system circulating exhaust, moisturizing and blowdown? whether does switch freely, leak valve (wash water valve etc.) on supervisor? as found abnormal and drainage, the problems referred to above need be handled well.
Two, all for chilled-water system valves (containing end equipment magnetic valve, except wash water valve) are all opened, circulate 4 hours, emptying chilled water again, then chilled water is filled.
Three, venting 1/3 chilled water, the dosing adding and relate in the composite maintenance medicament of chilled water is calculated, progressively moisturizing and dosing in proportion in chilled-water system, dosing complete (system water also fills) according to chilled-water system water-holding quantity, start circulation, terminate after 4 hours.
Four, get chilled water water sample to test.
Five, in Central air-conditioner refrigerant water system, with the addition of this prescription medicament, run after 1 year, chilled water all need be watered down emptying, again add this formula maintenance medicament by said process.
Although the present invention lists specific embodiment openly as above; but they are not for limiting the present invention; anyly be familiar with this those skilled in the art; without departing from the spirit and scope of the invention; can make various changes or retouch from working as; such as do to increase or reduce to certain part of feed composition or processing step, but may can not produce substantial effect, within the scope that the claims that so this change belongs to the application equally defines to the effect of product.
Claims (1)
1. a Central air-conditioner refrigerant water maintenance procedure, get the Central air-conditioner refrigerant water maintenance medicament determining concentration components: 200 ~ 1100ppm sodium pentahydyoxycaproate+300 ~ 900ppm borax+10 ~ 30ppm benzotriazole, is characterized in that:
The water-holding quantity of step one, accurately calculating Central air-conditioner refrigerant water system, first cleans the rust deposite of expansion tank inwall, eliminating impurities; By the emptying of central air-conditioning coolant system water, then Central air-conditioner refrigerant water pipe and end equipment strainer are unpicked and washed totally, and by Central air-conditioner refrigerant water system topped up with water;
Step 2, all opened by all for Central air-conditioner refrigerant water system valves, circulate 4 hours, again emptying chilled water, then filled by chilled water;
Step 3, venting 1/3rd chilled water, the dosing related in the chilled water maintenance medicament of the determination concentration components described in adding is calculated according to chilled-water system water-holding quantity, progressively moisturizing and dosing in proportion in chilled-water system, dosing is complete, terminates after 4 hours that start to circulate;
Step 4, get chilled water water sample and test;
Step 5, with the addition of in Central air-conditioner refrigerant water system described determination concentration components chilled water maintenance medicament, run after about 1 year, chilled water all need be watered down emptying, again add described chilled water maintenance medicament by step one to the process of step 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310313677.6A CN103388147B (en) | 2013-07-24 | 2013-07-24 | Central air-conditioner refrigerant water maintenance procedure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310313677.6A CN103388147B (en) | 2013-07-24 | 2013-07-24 | Central air-conditioner refrigerant water maintenance procedure |
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| CN103388147A CN103388147A (en) | 2013-11-13 |
| CN103388147B true CN103388147B (en) | 2016-01-13 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353205A (en) * | 2008-09-16 | 2009-01-28 | 河北省首钢迁安钢铁有限责任公司 | Method for preventing softening water from corrupting equipment |
| CN102583786A (en) * | 2011-01-24 | 2012-07-18 | 童建国 | NJTJ series central air conditioner water treatment disinfectant formula |
-
2013
- 2013-07-24 CN CN201310313677.6A patent/CN103388147B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353205A (en) * | 2008-09-16 | 2009-01-28 | 河北省首钢迁安钢铁有限责任公司 | Method for preventing softening water from corrupting equipment |
| CN102583786A (en) * | 2011-01-24 | 2012-07-18 | 童建国 | NJTJ series central air conditioner water treatment disinfectant formula |
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| CN103388147A (en) | 2013-11-13 |
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Address after: 210014 room 205, building 4, No. 12, alfalfa Garden West, Baixia District, Nanjing City, Jiangsu Province Patentee after: Tong Jianguo Patentee after: Tong Tianze Patentee after: Nanjing Tianjie Air Conditioning Technology Co.,Ltd. Address before: 210014 room 205, building 4, No. 12, alfalfa Garden West, Baixia District, Nanjing City, Jiangsu Province Patentee before: Tong Jianguo Patentee before: Tong Tianze Patentee before: Nanjing Tianjie Air Conditioning Decoration Engineering Co.,Ltd. |